Adding ethernet library.

hardware/libraries/Ethernet/examples/chat_server/chat_server.pde

@@ -0,0 +1,34 @@
+/*
+ * Chat Server
+ *
+ * A simple server that distributes any incoming messages to all
+ * connected clients.  To use telnet to 10.0.0.177 and type!
+ */
+
+#include <Ethernet.h>
+
+// network configuration.  gateway and subnet are optional.
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+byte ip[] = { 10, 0, 0, 177 };
+byte gateway[] = { 10, 0, 0, 1 };
+byte subnet[] = { 255, 255, 0, 0 };
+
+// telnet defaults to port 23
+Server server(23);
+
+void setup()
+{
+  // initialize the ethernet device
+  Ethernet.begin(mac, ip, gateway, subnet);
+  
+  // start listening for clients
+  server.begin();
+}
+
+void loop()
+{
+  Client client = server.available();
+  if (client) {
+    server.write(client.read());
+  }
+}

hardware/libraries/Ethernet/examples/echo_server/echo_server.pde

@@ -0,0 +1,53 @@
+/*
+ * Echo Server
+ *
+ * Echoes back the headers of the web request.  Good for
+ * learning how the HTTP protocol works.
+ */
+
+#include <Ethernet.h>
+
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+byte ip[] = { 10, 0, 0, 177 };
+
+Server server(80);
+
+void setup()
+{
+  Client client(255);
+  Ethernet.begin(mac, ip);
+  Serial.begin(9600);
+  server.begin();
+}
+
+void loop()
+{
+  char buf[512];
+  int i = 0;
+  Client client = server.available();
+  if (client) {
+    boolean previous_is_newline = false;
+    while (client.connected()) {
+      if (client.available()) {
+        char c = client.read();
+        if (c == '\n' && previous_is_newline) {
+          buf[i] = 0;
+          client.println("HTTP/1.1 200 OK");
+          client.println("Content-Type: text/html");
+          client.println();
+          client.println("<pre>");
+          client.println(buf);
+          client.println("</pre>");
+          break;
+        }
+        if (i < 511)
+          buf[i++] = c;
+        if (c == '\n')
+          previous_is_newline = true;
+        else if (c != '\r')
+          previous_is_newline = false;
+      }
+    }
+    client.stop();
+  }
+}

hardware/libraries/Ethernet/examples/web_client/web_client.pde

@@ -0,0 +1,41 @@
+#include <Ethernet.h>
+
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+byte ip[] = { 10, 0, 0, 177 };
+byte server[] = { 64, 233, 187, 99 }; // Google
+
+Client client(server, 80);
+
+void setup()
+{
+  Ethernet.begin(mac, ip);
+  Serial.begin(9600);
+  
+  delay(1000);
+  
+  Serial.println("connecting...");
+  
+  if (client.connect()) {
+    Serial.println("connected");
+    client.println("GET /search?q=arduino HTTP/1.0");
+    client.println();
+  } else {
+    Serial.println("connection failed");
+  }
+}
+
+void loop()
+{
+  if (client.available()) {
+    char c = client.read();
+    Serial.print(c);
+  }
+  
+  if (!client.connected()) {
+    Serial.println();
+    Serial.println("disconnecting.");
+    client.stop();
+    for(;;)
+      ;
+  }
+}